sismo.fun

Overview

sismo.fun is a launchpad for memecoins on Mantle. You launch a token in one transaction, people buy it on a bonding curve, and when the curve fills the token moves to a Uniswap pool with its liquidity locked.

Nothing here holds your money. Every launch, every buy and every sell is a transaction your own wallet signs and sends. The contracts hold reserves while a token is on its curve, and you can read those balances yourself at any point.

The shape of it

Every token has a fixed supply of one billion. That number never changes. There is no minting function, no owner who can print more, and no vesting schedule sitting behind the chart.

Of that billion:

  • 700,000,000 are sold on the bonding curve, to whoever buys them.
  • 300,000,000 are held back and put into a Uniswap pool the moment the token graduates.

The three states a token can be in

A token is on its curve, or it has graduated. There is no third state and no way back.

On the curve. Buying and selling both happen against the contract itself. The price goes up as tokens are sold and down as they are sold back, along a formula anyone can check. There is no order book and no counterparty.

Graduated. The curve reached its threshold. The reserves it collected and the 200 million tokens it held back became a Uniswap v3 pool, and the position that owns that liquidity was locked. Trading carries on in the pool, either through this site or anywhere else that trades Uniswap on Mantle.

What locked actually means

The liquidity from a graduation belongs to a contract with no function that removes it. Not a timelock that expires, and not a promise from whoever launched the token. The code to withdraw was never written, so the creator cannot pull it, the platform cannot pull it, and neither can we.

Fees earned by that position can be collected, because collecting fees and removing liquidity are different calls. The principal stays where it is.

Where to go next

If you are about to launch something, start with launching a token. If you want to understand what you are buying, read the curve. If you are building against the contracts, skip to network and contracts.